John,
I believe this is a latching relay that latches on and off. If your coach has not been plugged in, it may be that the batteries are low enough where the latch mechanism is not getting enough current to throw it completely. If it has not been plugged in for the storage duration, then try charging via a plugged connection or the generator for half an hour and see if the switch works.
If you have been plugged in, go to the electrical bay below the driver seat via the outside hatch door, and with someone operating the switch listen and feel for the relay that is functioning. It should be one of the larger metal objects connected to the panel wiring. It looks like an external starter solenoid switch. If the batteries are charged and the voltage is as it should be you will probably need to change this relay. There should be some info on it to identify it and allow you order one from BCS or they should know of a replacement.
Later Ed